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SOBRE ESTE BLOG

Technical tips and tricks for WebSphere products straight from the WebSphere technical consultants at the IBM Innovation Centre, Hursley, UK.
The views here are my own and do not represent IBM strategy, position or opinion.

If you have a JVM system heapdump on WebSphere, before you can use the excellent tools provided in IBM Support Assistant, you’ll need to use the jextract command to pre-process the dump file. I’ve recently been doing this on 64bit WebSphere Application Server 7.0.0.9 on AIX, and I wanted to share with you the solution to the following exception when running jextract : Exception in thread "main" java.lang.NegativeArraySizeException at com.ibm.dtfj.corereaders.NewAixDump.readUserInfo(NewAixDump.java:476) at... [More]